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Chart Increasing

Chapter 4 - Movement Analysis

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Flexed Biceps

Chapter 1 - Musculoskeletal Anatomy

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Woman Lifting Weights

Chapter 2 - Cardio - Respiratory Exercise Physiology

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Peanuts

Chapter 3 - Nutrition & Energy Systems

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Trophy

Chapter 5 - Skill In Sport

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Bar-Chart

Chapter 6 - Measurement & Evaluation Of Human Performance

Chapter 7 - Training To Optimize Physiological Performance

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Globe Showing Europe Africa

Chapter 8 - Environmental Factors & Performance

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Pill

Chapter 9 - Non-Nutritional Ergogenic Aids

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Chapter 10 - Individual Differences In Sport

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Fire

Chapter 11 - Motivation In Sport & Exercise

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Grimacing Face

Chapter 12 - Arousal, Anxiety & Performance

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Brain

Chapter 13 - Psychological Skills Training

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Downcast Face with Sweat

Chapter 14 - Overtraining, Stress & Burnout In Adolescent Athletes

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Stethoscope

Chapter 15 - Physical Activity & Health

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Red Apple

Chapter 16 - Nutrition For Sport & Exercise

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Chart Decreasing

Chapter 17 - Internal Assessment & Practical Work

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Writing Hand

Chapter 18 - Perparing for your exams 

<ul>
	<li>Definition: When a force makes an object free to spin about an axis. BUT this is only if the force isn&#39;t acting directly on the axis. It&rsquo;s like opening a door by pushing its handle!</li>
	<li>Measured in: Newton-meters (Nm).</li>
	<li>Torque has:
	<ul>
		<li>Size (Magnitude) 📏</li>
		<li>Direction 🧭</li>
	</ul>
	</li>
</ul>

🚀 Real-world example: Think of a seesaw in a playground. If a kid pushes one end (not at the center), it&rsquo;ll spin around its central support! That&rsquo;s torque.

<ul>
	<li>Many parts of our body spin about axes. This is especially true in our synovial joints (like our knees and elbows).</li>
	<li>Muscle arrangements in relation to joints = Determines torque around each joint.</li>
</ul>

🍖 Fun fact: This torque concept is tied to levers. Think of our bones as those rigid rods spinning around axes/joints.

<ul>
	<li>Components:
	<ul>
		<li>Rigid rod (like bones in our body).</li>
		<li>Fulcrum (axis).</li>
		<li>Resistance force (what we&#39;re working against).</li>
		<li>Effort force (the force we apply).</li>
	</ul>
	</li>
	<li>Terminologies: 
	&nbsp;</li>
	<li>Resistance Arm: Distance between resistance &amp; fulcrum.</li>
	<li>Effort Arm: Distance between effort &amp; fulcrum.</li>
	<li>Mechanical Advantage (MA): Shows how much the effort is multiplied to beat resistance.
	<ul>
		<li>Formula: MA = Effort Arm &divide; Resistance Arm</li>
	</ul>
	</li>
</ul>

🎪 Real-world example: Picture a seesaw again. The center support is the fulcrum. Where you and your friend sit are the effort and resistance forces!

<ul>
	<li>
	First Class Levers: 🥇

	<ul>
		<li>Effort &amp; Resistance: Opposite sides of the fulcrum.</li>
		<li>Effort arm can be longer, shorter, or equal to resistance arm.</li>
		<li>Body example: Neck muscles working to hold up our heavy heads.</li>
	</ul>
	</li>
	<li>
	Second Class Levers: 🥈

	<ul>
		<li>Effort &amp; Resistance: Same side of fulcrum.</li>
		<li>Effort arm is LONGER than resistance arm. So, small force can beat a large resistance!</li>
		<li>Real-world example: Wheelbarrows! Carry heavy stuff near the wheel (fulcrum) using minimal force on the handles.</li>
		<li>Body example: Standing on toes! Calf muscles act as effort force.</li>
	</ul>
	</li>
	<li>
	Third Class Levers: 🥉

	<ul>
		<li>Effort &amp; Resistance: Same side of fulcrum.</li>
		<li>Effort arm is SHORTER than resistance arm. Requires more force, but gives a greater range and speed.</li>
		<li>Body example: Lifting weights using the biceps. Elbow (fulcrum) and hand (resistance force) get more range and speed due to the bicep&#39;s effort!</li>
	</ul>
	</li>
</ul>

🎭 Interesting Point: Human body levers seem to be evolved for better range and speed rather than just force.

&nbsp;

Final Takeaway 🍔: Your body is an amazing combination of physics and biology! Torque and levers aren&#39;t just for machines - your body uses them every day for simple things like picking up objects or even just walking. It&#39;s all about balance, force, and motion! 🚶&zwj;♀️🚶&zwj;♂️

Unlock The Secrets Of Torque And Human Body Mechanics

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Standard Level

Sports, Exercise & Health Science SL

Chapter 4 - Movement Analysis

Unlock The Secrets Of Torque And Human Body Mechanics

Table of content

Torque AKA moments of force 🌀

Importance of torque in human body 🏃‍♀️

Unlock the Full Content!

Chapter 4 - Movement Analysis

Unlock The Secrets Of Torque And Human Body Mechanics

Table of content

Torque AKA moments of force 🌀

Importance of torque in human body 🏃‍♀️

Unlock the Full Content!